We understand that it is a current requirement to insulate 100% of a park home under PAS2035, or you should not do it at all? If the roof already has some insulation in it, can this section be omitted from the works, if so, what would be deemed to be an adequate level of existing insulation and is there any pattern related to park home standards that would state that all homes built after a certain year would/ should have existing roof insulation?